🚀 go-pugleaf

Hi Ed:

Thanks for your reply.
My code is as below:

HWND ghwnd;
BOOL CALLBACK MyEnumWndProc(HWND hWnd, LPARAM lParam);

BOOL CALLBACK MyEnumWndProc(HWND hWnd, LPARAM lParam)
{
   HINSTANCE hInst=(HINSTANCE)lParam;
   HINSTANCE hGetInst=(HINSTANCE)GetWindowLong(hWnd, GWL_HINSTANCE);
   if(hInst==hGetInst)
   {
      ghwnd=hWnd;
      return FALSE;
   }
   return TRUE;
}

void __fastcall TForm1::Button3Click(TObject *Sender)
{
   HINSTANCE hinst=ShellExecute(NULL, "open", "test.txt", NULL, NULL,
SW_SHOWNORMAL);
   if(!EnumWindows((WNDENUMPROC)MyEnumWndProc, (LPARAM)hinst))
   {
      // It didn't execute to this block.
      char szCaption[256]={0};
      GetWindowText(ghwnd, szCaption, 256);
      ShowMessage(szCaption);
   }
}

But, it still can't find the window which is created with ShellExecute.
Is there something wrong what I do? Please help me.

Thanks.
RaynorPao.


"Ed Mulroy [TeamB]" <ed@mulroy.org> ���g��l��
news:3e8c5793$1@newsgroups.borland.com...
> You could do FindWindow for   filename - Notepad  and hope.
>
> To get it without assuming anything, use the instance handle returned by
> ShellExecute do an EnumWindows and for each HWND received compare the
handle
> to GetWindowLong(hwnd, GWL_HINSTANCE).
>
>
> -----------------------
> struct HwndInfo
>   {
>   HINSTANCE hinst;
>   HWND hwnd;
>   };
>
> BOOL CALLBACK MyEnumProc)
>     HWND hwnd, LPARAM lp)
>   {
>   HwndInfo *hi_ptr = (HwndInfo *) lp;
>
>   if (GetWindowLong(hwnd, GWL_HINSTANCE) ==
>      hi_ptr->hinst)
>       {
>       hi_ptr->hwnd = hwnd;
>       return FALSE;
>       }
>
>   return TRUE;
>   }
> -----------------------
>
> and in your code which looks up the window handle:
>
> -----------------------
>   HwndInfo hi = { 0 };
>
>   EnumWindows(MyEnumProc, (LPARAM) &hi);
> -----------------------
>
> after which hi.hwnd will either be NULL if Notepad did not start or the
HWND
> of the Notepad window.
>
> .  Ed